Taste of Riak: C

To run this example,
- checkout the Riak C client w/ this branch: https://github.com/basho/riak-c-client/pull/47
- `./autogen.sh && ./configure && make && sudo make install` the C client

- run `make` in the `./c` directory
- build and start a Riak devrel (dev1 should be listening on port 10017)
- run `./taste_of_riak`

cc @javajolt